Fire extinguisher



April 1 1924. 1,489,089

P. G, M GREe R FIRE EXTINGUISHER File'd May 11, 1920 i 57 ATTORNEY.

Patented Apr. 1, 1924.

UNITED STATES PETER e. MAGGREGOR, or NEW You,

N. Y., ASSIGNOR T PYRENE MANUFACTURING COMPANY, A CORPORATION OF DELAWARE FIRE EXTINGUISHER.

Application filed May 11, 1920. Serial 1V0. 380,473.

To all whom it may concern:

Be it known that PETER G. MACGREGOR,

a citizen of the United States, residing at the city, county, and State of New York, has

5 invented certain new and useful Improvements in Fire Extinguishers, of which the following is a specification.

This invention relates to a fire extin-v guisher of the type in which an acid is held in a bottle orother suitable container provided with a loose stopper and a salt solution is contained in a suitable receptacle.

Upon turning the receptacle upside down the stopper drops mix with the salt solution and cause a gas 1 to be generated, creating a pressure which expels the contents of the receptacle.

One of the difliculties met with in the use of the ordinary extinguisher of this type is that when carried on railroad cars, .etc.,

Where they are subject to a constant jarring or movement, the ingredie nts slop over and become mixed, thus weakening the solution and, in some cases, rendering it inoperative when it is necessary to use the same and limiting its use to stationary places.

Attempts to overcome this difficulty by the use of a closed bottle, which is arranged to be broken to release the acid, have not been successful on account of the too rapid discharge of the acid and consequent high initial pressure produced by the too rapid generation of the gas, often causing the receptacle to burst. For this reason this arrangement isnot satisfactory in operation.

The object of this invention is to produce an extinguisher of this type which is simple in construction, positive in its action and adapted for use on moving cars, etc., as well as in stationary places.

In carrying out the'invention Iprovide a stopper of novel construction for'the acid container which prevents the slopping over of the acid and which, when the extinguisher is inverted to operate the same, regulates, to the required extent, the discharge of the acid therefrom.

I also provide a ment and construction which prevents the escape, due to the slopping, of the salt solution when the extinguisher is in its normal or upright position but permits the discharge of the same, when operated, through the outlet from the receptacle.

In the drawings 1 have illustrated one em;-

Kid

out and allows the acidtov guard of novel arrange-- bodiment of my invention applied to an extinguisher of the type indicated.

Fig. 1 is a sectional view in elevation of an extinguisher.

Figs. 2, 3 and 4 are detail views of the lard.

The receptacle, which contains the salt solution, is shown at 1 and is provided with a removable cap or cover 2, which also forms a handle for the device, and with an outlet 3 to which a hose 4: and nozzle are attached. All of these parts are of the usual construction-and.need not be described in detail.

A supporting frame is suspended in the receptacle 1 and'may be constructed of a number of strips, outwardly at their upper ends, or provided with outwardly bent pieces, such as 6, for supporting the frame from the upper portion or neck of the receptacle 1, as shown in Fig. 1.

An acid container or bottle? is positioned and held in the supporting frame 5. The frame 5 is formed of semi-resilient or yielding material and constructed with slightly offset portions 8-8 which engage above the body portion of the acid bottle 7 and hold the same in position, the frame members 5 yielding outwardly to allow the bottle 7 to be ssl pped into place past the oifset portions The bottle 7 is provided with a somewhat loosely fitting stopper 9 of peculiar construction. A tapered projection 9 extends downwardly from the central portion of the stopper 9 into the neck of the'bottle 7 and closes the same. Around the outer edge of the stopper a flaring, downwardly extending flange or side wall 10 extends, surrounding the outside of the neck of the bottle and resting upon the upper end of the body portion of the bottle. This flange or side wall is provided with a number of openings, such as 1111, which extend in an upwardly and outwardly inclined direction, when the device is in its upright or inoperative position, as shown in Fig. 1.

When the extinguisher is inverted the stopper 9 falls away a short distance, resting on the cap 2 and guided by the frame 5, the bottle 7 being held by the offset portions 8-8. When in this (inverted) position the flange or side wall 10 of the stopper 9 still surrounds aportion'of the neck of the bottle 7 and forms a cup which traps the such as 5, of U shape bent acid discharged from the bottle, in a well known manner due to the vacuum formed in the bottle 7 behind the liquid therein as the latter escapes, the liquid being prevented from rising sufficiently in the space between the flange 10 and the neck of the bottle to overflow the flange, permitting it to escape slowly through the openings 1111 and regulating the flow to a predetermined amount and rate to cause the necessary amount of gas to be generated at the required rate to discharge the contents of the receptacle without causing an excess of pressure from a too rapid generation of the expelling gas.

When in its upright or inoperative position this flange or side wall 10 preventsdisplacement of the stopper by any jarring or ordinary movement to which the receptacle may be subjected in ordinary use, such as on railroad cars, etc., and thus effectually prevents the slopping'over of the acid from the bottle and also revents any of the salt solution from entering the acid bottle and mixing with the acid therein, due to the slopping action imparted to it by such movement of the device.

To prevent the salt solution from entering the outlet 3 when the extinguisher is in its upright position and the solution subjected to a slopping action. a guard 12 is attached to the inside f the rece tacle 1 over theoutlet opening (see Fig. 2 This guard is'preferably of circular shape and constructed of a thin piece of perforated material and mav be attached to the receptacle by soldering or other suitable means. A second guard or shield 18, similar in shape t the guard 12, except that it is not perforated and the upper edge is cut off,

as indicated at 14 (Figs 3), is attached to the wall of the receptacle 1 by a hinge 15 and spring clips 16 and 17 over the guard 12 and spaced a short distance from the wall of the receptacle 1 to provide an opening for the solution to pass through to the outlet 3 when the device'is inverted. This construction is shown in the sectional view, Fig. 2, and in Fig. 8, which is a face view of the guard 13 and its mounting, Fig. 4

being a section of one of the spring clips, takenon the line 4-4 of Fig. 3.

The cut off portion 14 at the upper edge of the guard 18 provides space for inserting a finger to raise or open the guard 13 about its hinge 15 to permit access to the perforated guard 12 for cleaning, etc. The hinge construction prevents the guard 13 from dropping into the receptacle 1 when opened.

It will be seen that the difficulties pointed out have been overcome by the features of construction described and in actual tests it has been demonstrated with this construction that the extinguisher may be subjected to any arrinsr or accidental movement such as is liable to be met with inuse and not be rendered inoperative or its efficiency impaired. 1

What I claim is:

1. A bottle shaped container adapted for use in a device of the class described and provided with a stopper loosely positioned upon and closing the neck of said container,

said stopper being constructed with a flange provided with a number of openings extending in an upwardly and outwardly inclined direction therethrough, said flange surrounding the neck of and resting upon the body portion f said container.

2. A bottle shaped container adapted to use in a device of the class described and provided with a stopper looselypositioned upon and closing the neck of said container said stopper being constructed with an outwardly flaring and downwardly extending flange having an inside diameter at its up-. per portion.substantially the same as the outside diameter of the neck of said container and its lower portion of larger diameter and resting upon the upper end of the bodv portion of said container. said flange being provided with openings of predetermined size extending through said flange intermediate its said upper and lower portions.

Intestimony whereof, the said PETER G. MAoGREGoR, has signed his name to this specification, this 19th day of April, 1920.

PETER G. MAGGREGOR. 

